The elongated “sheesh” became a widely shared reaction sound during the TikTok meme wave around 2020 and 2021, where creators used it to amplify moments of admiration or fake shock. Different versions circulated as people recorded their own delivery, so the exact source of many uploads is often unclear. Its appeal comes from how quickly it communicates hype with a slightly sarcastic edge. The sound still shows up in short-form videos, often alongside loud reaction staples like air horn or a quick yeah for extra emphasis.